The 



Journal of Heredity 



(Formerly the American Breeders' Magazine) 



Vol. XIII, No. 6 Junk, 1922 



CONTENTS 



CITRUS FRUITS OF JAPAN Tyuzaburo Tanaka 243 



THE FOUNDATIONS OF BIOLOGY (A Review) 253 



WHICH BOSTON FERN IS BEST? R. C. Benedict 255 



PHILOLOGY AND EVOLUTION (A Review) 264 



INTELLIGENCE AND RACE Paul Popexoe 265 



MANY-NODED DWARF BARLEY 



Harry V. Harlan and Merritt N. Pope 269 



TALKING DOGS 274 



A NEW SOCIAL CASE-HISTORY MANUAL 276 



VALUE OF THE HEMP PLANT FOR INVESTIGATING SEX INHER- 

 ITANCE Walter Scott Malloch 277 



A VARIATION IN THE DOWNING GOOSEBERRY Paul Thayer 284 



ARE ANY SPECIES UNIFORM .'' O. F. Cook 285 



A EUGENIC COROLLARY 288 



CHILDREN NEED FATHERS 288 



THE DEVELOPMENT OF THE CHILD (A Review) 288 



The Journal of Heredity is published monthly by the 



AMERICAN GENETIC ASSOCIATION 



Publication office, 450 Ahnaip Street, Menasha, Wis. 



Editorial and general offices, Washington, D. C. 



Entered as second-class matter May 13, 1921, at the postoffice at Menasha, 

 Wisconsin. Acceptance for mailing at the special rate of postage provided for in 

 Section 1103, Act of October 3, 1917, authorized Dec. 20, 1918. Contents copy- 

 righted 1923 by the American Genetic Association. Reproduction of articles or parts 

 of articles permitted only upon request, for a proper purpose, and provided due credit 

 is given to author and to the JOURNAL OF HEREDITY (Organ of the American 

 Genetic Association, Washington, D. C), Menasha, Wisconsin. Address all com- 

 munications to the Association's office at Washington, D. C. 



Date of issue of this number, February 15, 1923. 



